Field analysis for nonlinear magnetic heads

Monson, J.

doi:10.1109/tmag.1972.1067419

Cited by 21 publications

(3 citation statements)

References 3 publications

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“…The other half of this article investigated head saturation in symmetrical heads with tilted gap corners through finiteelement modeling and simulations, using the vector potential formulation and the nonlinear B-H core material permeability model of Monson [20]. To characterise corner saturation, the saturation onset field was defined to occur at the driving field that causes a 10% root-mean-square deviation from the linear (constant permeability) material model.…”

Section: Discussionmentioning

confidence: 99%

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Theoretical Analysis of Gap Potential Functions and Corner Saturation in 2-D, Symmetric Magnetic Recording Heads With Tilted Gap Corners

Aziz¹,

Edress²

2016

IEEE Trans. Magn.

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Section: Discussionmentioning

confidence: 99%

“…The field dependence of the relative permeability of the core material is assumed here to follow Monson [20]:…”

Section: Gap Corner Saturationmentioning

confidence: 99%

Theoretical Analysis of Gap Potential Functions and Corner Saturation in 2-D, Symmetric Magnetic Recording Heads With Tilted Gap Corners

Aziz¹,

Edress²

2016

IEEE Trans. Magn.

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“…The Monson model [17] has been used for all such definitions. The saturation flux density and initial static permeability of Sendust have been assumed to be 1.1 T and 1500, respectively.…”

Section: Methodsmentioning

confidence: 99%

Eddy-current-assisted digital video read/write head

2001

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The paper describes write fields and replay characteristics of gapped heads with magnetically recessed leading poles for high-frequency digital video. It describes an investigation by finite-element analysis and compares computed results for laminated Sendust and Co 91 Nb 6 Zr 3 heads and discusses the effects due to depositing a layer of copper inside the leading gap edge. Recessing the leading pole yields an asymmetric field, while eddy currents in the copper layer cause an advantageous redistribution of flux in the head. Predicted increases in both maximum horizontal field and horizontal field gradient by at least 130% and 17% are predicted for Sendust and Co 91 Nb 6 Zr 3 heads, respectively, at 100 MHz. Hence, such a head can write on higher coercivity media than a conventional gapped head. The playback performance is also improved by an extension of the frequency response. The paper gives a linear model for the phase of the spectral response, valid over a wide range of frequencies, for each of two leading pole recessions.Index Terms-Digital magnetic recording, eddy currents, finite element methods, magnetic recording/reading heads, video recording.

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Computer simulated reproduction process with nonlinear magnetic heads

Koshimoto

Mikazuki

1981

Electron. Comm. Jpn. Pt. I

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To upgrade magnetic recording equipment consideration anticipated is given to the construction of an electromagentic conversion using high‐permeability magnetic media in order to obtain high output with high resolution power. In the case of obtaining high reproduction output, the nonlinear magnetism of the reproduction head can affect the reproduction properties, but presently there is no report on the head operation with nonlinearity taken into account. In this paper, the reproduction process with nonlinear magnetic head is simultaed numerically and the magnetic field, permeability and magnetic flux distributions in the head as well as the effect of the nonlinearity of the head core material are analyzed. Results show that the core permeability decreases locally because of local concentration of magnetic flux due to the presence of recorded media and the permeability decreases significantly when the medium position giving rise to maximum output lies in the vicinity of the gap. The reason for degradation of the reproduction characteristics in heads using material with low saturation flux density can be explained by the fact that the low‐permeability region in the vicinity of the gap gives rise to an effective gap increase.

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Field analysis for nonlinear magnetic heads

Cited by 21 publications

References 3 publications

Theoretical Analysis of Gap Potential Functions and Corner Saturation in 2-D, Symmetric Magnetic Recording Heads With Tilted Gap Corners

Theoretical Analysis of Gap Potential Functions and Corner Saturation in 2-D, Symmetric Magnetic Recording Heads With Tilted Gap Corners

Eddy-current-assisted digital video read/write head

Computer simulated reproduction process with nonlinear magnetic heads

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